<?php // $Id: edit_statement.class.php,v 1.6 2007/10/10 05:25:30 nicolasconnault Exp $

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.com											//
//																	   //
// Copyright (C) 1999 onwards Martin Dougiamas		http://dougiamas.com  //
//		   (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com  //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

/// This class will provide the interface for all the edit statement actions

class edit_statement extends XMLDBAction {

	/**
	 * Init method, every subclass will have its own
	 */
	function init() {
		parent::init();

	/// Set own custom attributes

	/// Get needed strings
		$this->loadStrings(array(
			'change' => 'xmldb',
			'vieworiginal' => 'xmldb',
			'viewedited' => 'xmldb',
			'newsentence' => 'xmldb',
			'sentences' => 'xmldb',
			'edit' => 'xmldb',
			'delete' => 'xmldb',
			'duplicate' => 'xmldb',
			'back' => 'xmldb'
		));
	}

	/**
	 * Invoke method, every class will have its own
	 * returns true/false on completion, setting both
	 * errormsg and output as necessary
	 */
	function invoke() {
		parent::invoke();

		$result = true;

	/// Set own core attributes
		$this->does_generate = ACTION_GENERATE_HTML;

	/// These are always here
		global $CFG, $XMLDB;

	/// Do the job, setting result as needed
	/// Get the dir containing the file
		$dirpath = required_param('dir', PARAM_PATH);
		$dirpath = $CFG->dirroot . stripslashes_safe($dirpath);

	/// Get the correct dirs
		if (!empty($XMLDB->dbdirs)) {
			$dbdir =& $XMLDB->dbdirs[$dirpath];
		} else {
			return false;
		}
		if (!empty($XMLDB->editeddirs)) {
			$editeddir =& $XMLDB->editeddirs[$dirpath];
			$structure =& $editeddir->xml_file->getStructure();
		}

	/// ADD YOUR CODE HERE
		$statementparam = optional_param('statement', NULL, PARAM_CLEAN);
	/// If no statement, then we are coming for a new one. Look for
	/// type and table and build the correct statementparam
		if (!$statementparam) {
			$typeparam = optional_param('type', NULL, PARAM_CLEAN);
			$tableparam = optional_param('table', NULL, PARAM_CLEAN);
			$typename = XMLDBStatement::getXMLDBStatementName($typeparam);
			$statementparam = trim(strtolower($typename . ' ' . $tableparam));
		}
		if (!$statement =& $structure->getStatement($statementparam)) {
		/// Arriving here from a name change, looking for the new statement name
			$statementname = required_param('name', PARAM_CLEAN);
			$statement =& $structure->getStatement($statementparam);
		}

		$dbdir =& $XMLDB->dbdirs[$dirpath];
		$origstructure =& $dbdir->xml_file->getStructure();

	/// Add the main form
		$o = '<form id="form" action="index.php" method="post">';
		$o.= '<div>';		
		$o.= '	<input type="hidden" name ="dir" value="' . str_replace($CFG->dirroot, '', $dirpath) . '" />';
		$o.= '	<input type="hidden" name ="statement" value="' . $statementparam .'" />';
		$o.= '	<input type="hidden" name ="action" value="edit_statement_save" />';
		$o.= '	<input type="hidden" name ="postaction" value="edit_statement" />';
		$o.= '	<table id="formelements" class="boxaligncenter">';
		$o.= '	  <tr valign="top"><td>Name:</td><td><input type="hidden" name ="name" value="' . s($statement->getName()) . '" />' . s($statement->getName()) .'</td></tr>';
		$o.= '	  <tr valign="top"><td><label for="comment" accesskey="c">Comment:</label></td><td><textarea name="comment" rows="3" cols="80" id="comment">' . s($statement->getComment()) . '</textarea></td></tr>';
		$o.= '	  <tr valign="top"><td>&nbsp;</td><td><input type="submit" value="' .$this->str['change'] . '" /></td></tr>';
		$o.= '	</table>';
		$o.= '</div></form>';
	/// Calculate the buttons
		$b = ' <p class="centerpara buttons">';
	/// The view original XML button
		if ($origstructure->getStatement($statementparam)) {
			$b .= '&nbsp;<a href="index.php?action=view_statement_xml&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '&amp;select=original&amp;statement=' . $statementparam . '">[' . $this->str['vieworiginal'] . ']</a>';
		} else {
			$b .= '&nbsp;[' . $this->str['vieworiginal'] . ']';
		}
	/// The view edited XML button
		if ($statement->hasChanged()) {
			$b .= '&nbsp;<a href="index.php?action=view_statement_xml&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '&amp;select=edited&amp;statement=' . $statementparam . '">[' . $this->str['viewedited'] . ']</a>';
		} else {
			$b .= '&nbsp;[' . $this->str['viewedited'] . ']';
		}
	/// The new sentence button
		$b .= '&nbsp;<a href="index.php?action=new_sentence&amp;postaction=edit_sentence&amp;statement=' . $statementparam . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['newsentence'] . ']</a>';
	/// The back to edit xml file button
		$b .= '&nbsp;<a href="index.php?action=edit_xml_file&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['back'] . ']</a>';
		$b .= '</p>';
		$o .= $b;

	/// Delete any 'changeme' sentence
		///$statement->deleteSentence('changeme');

	/// Add the fields list
		$sentences =& $statement->getSentences();
		if (!empty($sentences)) {
			$o .= '<h3 class="main">' . $this->str['sentences'] . '</h3>';
			$o .= '<table id="listfields" border="0" cellpadding="5" cellspacing="1" class="boxaligncenter flexible">';
			$row = 0;
			foreach ($sentences as $key => $sentence) {
			/// Prepend some SQL
				if ($statement->getType() == XMLDB_STATEMENT_INSERT) {
					$p = 'INSERT INTO ' . $statement->getTable() . ' ';
				} else {
					$p = 'UNSUPPORTED SENTENCE TYPE ';
				}
			/// Calculate buttons
				$b = '</td><td class="button cell">';
			/// The edit button
				$b .= '<a href="index.php?action=edit_sentence&amp;sentence=' .$key . '&amp;statement=' . urlencode($statement->getName()) . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['edit'] . ']</a>';
				$b .= '</td><td class="button cell">';
			/// The duplicate button
				$b .= '<a href="index.php?action=new_sentence&amp;postaction=edit_sentence&amp;basesentence=' . $key . '&amp;statement=' . urlencode($statement->getName()) . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['duplicate'] . ']</a>';
				$b .= '</td><td class="button cell">';
			/// The delete button
				$b .= '<a href="index.php?action=delete_sentence&amp;sentence=' . $key . '&amp;statement=' . urlencode($statement->getName()) . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['delete'] . ']</a>';
				$b .= '</td>';
			/// Print table row
			$o .= '<tr class="r' . $row . '"><td class="table cell">' . $p . $sentence . $b . '</tr>';
				$row = ($row + 1) % 2;
			}
			$o .= '</table>';
		}

		$this->output = $o;

	/// Launch postaction if exists (leave this here!)
		if ($this->getPostAction() && $result) {
			return $this->launch($this->getPostAction());
		}

	/// Return ok if arrived here
		return $result;
	}
}
?>
